Guiding device for long draft aprons



June 7, 1938.

J.- L. TRUSLOW GUIDING DEVICE FOR LONG DRAFT APRONS Filed July 17, 1933 2 Sheets-Sheet l LLLELLQQLI-Q INVENTOR W 025% BY M -r M ATTORNEYS.

June 7, 1938. v L. TR LOW 2,119,658

GUIDING DEVICE FOR LONG DRAFT APRONS Filed July 17, 1933 2 Sheets-Sheet, 2

5! 44 l 45 i i 35 32" l 35 as; I 5| i I INVENTOR.

53 A. BY J ATTORNEYS.

Patented June 7, 1938 V V r i g i V UNITED STATES PATENT OFFICE GUIDING DEVICE FOR. LONG DRAFT APRONS James L. Truslow, Whitinsville, Mass, assignor to Whitin Machine Works, W'hitinsville, Mass, a corporation of Massachusetts Application July 17, 1933, Serial No. 680,692

21 Claims. (01. 19-131) This invention relates to long draft spinning higher speed than the rolls I3 and. M to provide mechanism in which endless belts or aprons are the desired draft. Any desired provision may be used as part of the drafting system and its objects made for weighting the upper rolls. are to improve the devices, or cradles, used for The parts thu far de ribed ar of the u ual 5 supporting and guiding the aprons. The more form and'in themselves constitute no part of my .5 specific objects are to insure that the aprons will present invention, which relates particularly to be properly set up inthe machine and reliably devices for supporting and guiding the aprons retained in correct position; to insure that they 25 and 26. will be properly guided therein so as to minimize For this purpose I provide removable guide edge wear; to prevent the" removal of, the cradle frames 30 each preferably formed from the blank 10 and top roll together; to facilitate the use genshown in Fig. 5. The frame comprises side erally of these devices and particularlythe operplates 3| joined by a roving deflecting table 32, ation of repairing broken ends; and to accompreferably integral with the side plates, and. by a plish these objects without the addition of sepacross rod 33 fixed in the side plates and holding rable parts likely to fall into the machine. them in spaced relation. 15

A preferred form of the invention is shown Studs 35 are secured in holes 36 in the side in the drawings, in which plates 3| and constitute front guides for the Fig. 1 is a sectional side elevation of portions aprons 25. and .26, the function of the studs 35 of a long draft spinning mechanism embodying being clearly shown in Fig. 1. Such studs form my improvements, taken along the line l-I in no part of the presentinvention being the sub- 20 Fig. 2; ject of'aicompanion case.

Fig. 2 is a plan view looking in the direction The side. plates 3| are provided with upwardly of the arrow 2 in Fig. 1; concave recesses or bottom notches 40 and with Fig. 3 is a plan view of the guiding device; downwardly concave recesses or top notches 4|, :5 Fig. 4 is a side elevation thereof with the separated by narrow connectingportions 42. The

guide clips in open position; portions 42 extend between reduced portions of Fig. 5 is a plan view of the blank from which the rolls l3 and I4 when the guiding devices are the guide frame is constructed; in place.

Fig. 6 is a side view of one of the guide clips, The side'plates3l are. inwardly oifset as in- :3 and dicated' at 44 and the rear portions. 45 ofthe' side 30,

Fig. '7 is a perspective view of one of the belt plates 3| constitute guides to-limit the traverse guidin studs, of the yarn and to prevent the yarn from run- Referri-ng to Figs. 1 and 2, I have shown a roll ning off the edges of the aprons 25 and 26. stand I!) supporting back rolls II and I2, inter- 'Guard members50 (Figs. 4 and 6) are pivoted mediate rolls |3 and I4 and front rolls l5 and on studs 5| secured in openings 52 (Fig. 5)'in the 35 IS. The lower rolls l3 and I5 are mounted side plates 3|. Each guard member 50 comprises in bearings supported on the roll stands l0 and a hook-shaped portion 53 (Fig. 6) adapted to these rolls are positively driven in predetermined extend around the under side of the lower roll speed relation. The upper rolls l2, l4 and I6 l3 and. to form a guide for the edges of each rest on the lower rolls l I, I3 and 5 and are held lower apron 25 as the apron crosses the wide 40 in position by bearing members |8, |9 and20. loweropen' ends of the recesses 40 in the side The members 20 are mounted on a cross rod plates 3| 2| (Fig. 1) and the members l8 and I9 are The upper portion 54 of each guard 50' extends mounted on, rods 22 secured in the ends of the above the upper run of the upper apron 26, and members 20. The spacing of the intermediate 8 projection 55 of the guard extends between the and front lower rolls I3 and I5 may be varied by guide studs 35 when the clip is in operative posiloosening binding screws Mi and the upper rolls tion. These upper portions furnish guiding surmay be spaced to correspond by adjusting the faces for the various runs of the aprons, and the blocks l8 and i9 on the rods 22. edge 56 (Fig. 6) of the guard is normally en- 50 Each yarn Y passes through a guide-eye 23' gaged by a portion of the upper roll I4 as shown 50 by which it is directed between the back rolls in Fig. 1, thus preventing release of the guard as and 2. The yarn then passes between aprons long as the roll I4 is in operative position. 25 and 26 on the intermediate rolls l3 and I4 When the guards 50 are moved to the position and is delivered by the aprons to the front rolls shown in Fig. 4, the entire guiding device in.- |5=and IS, which arerotated at substantially cluding the guards 50 may be readily removed .55

from the'lower drawing roll l3, but when the guards are in the raised or closed position shown in Fig. 1, the guiding device is securely mounted on the rolls I3 and I4 and is firmly held from displacement relative thereto. a 7

I The guards are'raised to the position in which they do not obstructathe top notchesby the engagement' therewith of the bottom roll when the latter is entered into the bottom notches of the frame. This insures thatthe top notches are open when the cradle has been fully seated on the bottom roll and also that the. guards are in proper apron-guiding positions when the'top roll is replaced.

7 It will be n'oted that the guards 59 thus have.. 1 several functions; one is to guide the 'apronto.

keep it from overlapping the shoulders or ends of the roll, which injures it, or from-scraping or wearing on the edges of the notches; another to lock the cradle to the bottom roll; and another is to form an interlock with the toproll either-for the purpose of insuring against a misplaced cradle or an improperly guided apron, or both as the case may be; These functions are obviously not: interdependent since it will be apparent that a single guard member serving merely as a latch or look will suffice to lock the cradle to the bottorn'rol'l or tointerlock it with the top roll; whereas two guard members serving merely as apron guides are required, one on each side of the apron, for keeping it from running over the roll shoulders;

locatedbehind the bottom draft roll and below' the path of the roving; and'in this. position it serves also'as one of the cross-members of the name frame. V 4 a c 'Having. thus described my'invention' and the advantages thereof, I do not wish tobe limited to the details herein disclosed, otherwise than as set forth in theclaims; butwhatI claim is:

l. A cradle for "long-draft spinning aprons comprisingan apron-guiding frame shaped to receive top and bottom draft rolls and including a roving-deflecting table located below the path of the roving and close to the back side 'of said bottom draft roll; whereby a roving-end may fall thereon and belifted therefrom to its normal path by said bottom roll.

'2: A cradle for long draft spinning aprons comprising two side plates having top and bottom draft roll notches and united by an integral cross member in the form of a roving-deflecting table located horizontally in rear of the bottom roll and belowthe normal path of the roving.

3. In combination with drafting rolls, a cradle for long-draft spinning aprons comprising side plates held together byv cross-members and formed with notches to receive the bottom intermediate'roll, an'endless apron on said bottom .roll, said side plates being inwardly offset in rear ofsaid bottom roll and apron and one of said cross-members being in the form of a deflecting,

tableconnecting the offset parts of theside plates and located in position to receive a roving end drooping from the lower'back roll and steer it into contact with said apron; r g 4. In long-draft spinning, the combination of the back and intermediate rolls, aprons on the notched to receive the intermediate rolls, said cradle including a deflecting table directly behind the lower apron and vertically below the roving delivery of said back rolls, wherea roving end from said back rolls will encounter it and be] deflected thereby into contact with said lower apron. I

5. In long draft spinning apparatus, top and ;bottom endless draft aprons, a pair of back rolls "feeding roving to said aprons, and a roving de- V fleeting table" located beneath the delivery side of the back rolls in position to receive a broken end emerging or drooping therefrom and guide it into contact with the bottomxapron.

6. In combinationwith the structure of the preceding claim 5, a removable cradle forguiding'the endless aprons, and said roving-deflecting table being carried on said cradle.

7 In combination with the structure of claim 5, a removable cradle for [guiding the endless aprons composed of-a'frame with side plates, and said'roving-deflecting table forming one of the cross-connecting members of said frame and being integral therewith.

9. A cradle for longdraft' spinning aprons.

comprising a frame having top and bottom a '8. A cradle for long-draft spinning aprons.

notches for the draft rolls, a guard membermovably mounted thereon adapted to obstruct entrance of the top roll into the top notch, such member having a part engaged by the roll in the bottom notch and moved thereby to non-obstructing position with reference to the top notch.

10. A cradle for long-draft spinning aprons comprising a frame having a space to receive a the top roll, latch means movable to lock-"the frame to the bottom roll, said latch means obstructing said top roll space when'moved to its unlocking position. 1 I a a 11. A cradle for long-draft spinning aprons comprising a frame having top and bottom roll notches and a member thereon movable into obstructing positionlalternately with respect to 'a top notch and a bottom notch.

'12.'A cradle. for long-draft spinn ng'aprons comprising a frame shaped to receive the'top and bottom draft rolls and an interlocking latch means co-acting with both rolls and movably mounted on said frame. c

13. A'cradle. for long-draft aprons comprising side plates, means to hold said plates in fixed spaced relation, said side plates having bottom notches to accommodate'the lower intermediate roll, and guards pivotally mounted on said side plates and substantially closing the lower portions of said recesses when inoperative position,

said guards being held in operative position by engagementof a portion of each guard with the upper intermediate roll.

. 14.A cradle for long-draft aprons comprising I side plates, means" to hold said plates in fixed spaced relation, said side plates having bottornl 'notches to accommodate the'lowe-r intermediate roll, and guards pivotallymounted on said side platesand substantially closing the lower portions of said notches when in operative position,

said guards having upwardly extending portions:

engaging the upper intermediate roll .to prevent opening movement of said guards and also providing extended belt-guiding surfaces.

15. A cradle for long-draft spinning aprons comprising a frame composed of ulnited side plates having bottom notches to receive the bottom draft roll, a guard member permanently and pivotally attached to said frame, its range of pivotal movement serving to bring it into and out of closing relation to said bottom' notch, and means for retaining said member in closed position accessible on the upper part of said frame.

16. A cradle for long-draft spinning aprons comprising a frame composed of united side plates with bottom notches for receiving the bottom draft roll, a guard member for substantially closing said notch, said member being permanently pivotally attached to said frame to swing upwardly toward and downwardly from said bottom notch and means, independent of its pivotal attachment, for retaining said member in its upper position.

17. A cradle for long-draft spinning aprons comprising a frame having top and bottom notches respectively for receiving top and bottom draft rolls and composed of side plates and cross members holding said plates in predetermined relation, one of said cross members being forward and another in rear of said bottom roll notches, and a guard pivotally attached to one of said side plates and adapted to swing up and down in the space between said two cross members and substantially closing said notch in its upper position.

18. A cradle for long-draft spinning aprons comprising a frame composed of side plates formed with notches to receive the top and bottom rolls, each plate having a fiat latch permanently pivoted to and against its inner face, the pivotal point being forward of the bottom notch and the lower extremity of said latch serving to close the entrance tothe bottom notch,

and said latches being independent of each other on opposite sides of the apron on said bottom roll and accessible from the top of the frame.

19. In long-draft spinning, the combination with top and bottom rolls, aprons thereon, a

cradle for the aprons comprising side platesnotched to receive the bottom roll and provided with forward bearings for the top and bottom aprons, and edge-guiding means for the aprons extending across said notches and above and below said apron bearings.

20. A cradle for long draft spinning aprons comprising a frame shaped to receive top and bottom draft rolls, a movable latch member permanently attached to said frame and movable thereon to lock the frame in position, said member having an upwardly extending part accessible from the upper side of the frame.

21. A cradle for long draft spinning aprons comprising a frame having notches formed therein to receive a draft roll and having movable apron edge-guiding means, said means being pivotally mounted to hold two positions, in one of which a portion of said means intrudes on the roll space in said notches and said means being movable to its other, working, position by engagement with a roll entering said notches.

JAMES L. TRUSLOW. 

